- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03856424
Effect of Three Modalities of Spontaneous Breathing Tests on Respiratory Efforts in Tracheostomized Patients (TWEEP)
Effect of Three Modalities of Spontaneous Breathing Tests on Respiratory Efforts in Tracheostomized Patients. Monocentric Crossover Interventionnal Study.
Datas are lacking concerning weaning from mechanical ventilation for tracheostomized patients. In particular, the effect of different modalities of spontaneous breathing trials on respiratory effort has not been extensively described.
This crossover physiology study will include 18 tracheostomized patients ventilated for more than 72 hours.
The objective of this study is to compare the effect of three different modalities of SBTs on respiratory effort in tracheostomized patients. The modalities tested are : Pressure Support Ventilation (PSV level 5 cmH2O, PEEP 5 cmH2O), T-piece test and high-flow Oxygen. Each modality is applied in a randomized order, during 30 minutes. During every modality tested, esophageal and gastric pressure, expired CO2, and comfort will be monitored, in addition to standard monitoring. Based on esophageal pressure monitoring, patient's respiratory efforts can be calculated either by esophageal pressure-time product and work of breathing. Pressure generated by inspiratory muscles will also be assessed.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Lise Piquilloud Imboden, MER&PD
- Phone Number: +41 79 556 68 27
- Email: lise.piquilloud@chuv.ch
Study Contact Backup
- Name: Davy Cabrio
- Phone Number: +41 79 556 69 56
- Email: davy.cabrio@chuv.ch
Study Locations
-
-
Vaud
-
Lausanne, Vaud, Switzerland, 1011
- Recruiting
- Lausanne University Hospitals
-
Contact:
- Lise Piquilloud Imboden, PD&MER
- Phone Number: +41 79 556 68 27
- Email: lise.piquilloud@chuv.ch
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients for whom a tracheostomy is planned
- Patients on invasive ventilation for >72 hours
Exclusion Criteria:
- Tracheostomy for upper airway obstruction or other disease
- Patients tracheostomized before current hospitalization
- Patients with Glasgow Coma Scale (GCS) < 8/10 after cardiac arrest
- Patients with GCS < 8/10 because of primary central neurologic disease
- Patients for whom therapeutic limitations have already been decided
- Patients for whom weaning from ventilation is not an objective
- Patients suffering from myasthenia gravis
- Patients with cardiac assistance device
- Patients with medullary lesion proximal to C5
- Patients for whom nasogastric tube insertion is contraindicated
Study Plan
How is the study designed?
Design Details
- Primary Purpose: OTHER
- Allocation: RANDOMIZED
- Interventional Model: CROSSOVER
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
OTHER: Modality 1 - Washout - Modality 2 - Washout - Modality 3
Three different 30-minute modalities of deventilation will be performed in a randomized order in each patient.
Washout periods of 30 minutes will occur between tested modalities.
|
Pressure support ventilation (PSV) modality
T-Piece modality
High-flow oxygen
|
OTHER: Modality 1 - Washout - Modality 3 - Washout - Modality 2
Three different 30-minute modalities of deventilation will be performed in a randomized order in each patient.
Washout periods of 30 minutes will occur between tested modalities.
|
Pressure support ventilation (PSV) modality
T-Piece modality
High-flow oxygen
|
OTHER: Modality 2 - Washout - Modality 1 - Washout - Modality 3
Three different 30-minute modalities of deventilation will be performed in a randomized order in each patient.
Washout periods of 30 minutes will occur between tested modalities.
|
Pressure support ventilation (PSV) modality
T-Piece modality
High-flow oxygen
|
OTHER: Modality 2 - Washout - Modality 3 - Washout - Modality 1
Three different 30-minute modalities of deventilation will be performed in a randomized order in each patient.
Washout periods of 30 minutes will occur between tested modalities.
|
Pressure support ventilation (PSV) modality
T-Piece modality
High-flow oxygen
|
OTHER: Modality 3 - Washout - Modality 2 - Washout - Modality 1
Three different 30-minute modalities of deventilation will be performed in a randomized order in each patient.
Washout periods of 30 minutes will occur between tested modalities.
|
Pressure support ventilation (PSV) modality
T-Piece modality
High-flow oxygen
|
OTHER: Modality 3 - Washout - Modality 1 - Washout - Modality 2
Three different 30-minute modalities of deventilation will be performed in a randomized order in each patient.
Washout periods of 30 minutes will occur between tested modalities.
|
Pressure support ventilation (PSV) modality
T-Piece modality
High-flow oxygen
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Evolution of pressure-time product of esophageal pressure
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Quantification of inspiratory effort of the patient
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Evolution of work of breathing (WOB)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Total area of a Campbell diagram for esophageal pressure and volume during one respiratory cycle
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of esophageal pressure drop
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Maximum variation of esophageal pressure during respiratory cycles
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of inspiratory muscle pressure (Pmus)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Pressure generated by patients' respiratory muscles
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of transdiaphragmatic pressure (Ptransdiaph)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Difference between gastric and esophageal pressure.
Reflect of pressure generated by diaphragm during inspiration
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of tidal volume (VT)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
|
Evolution of respiratory rate (RR)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
|
Evolution of inspiratory airway flow
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
|
Evolution of ratio of inspiratory time over total duration of a breathing cycle (ti/ttot)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
|
Evolution of Rapid Shallow Breathing Index (RSBI)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
RR/VT - predictor during ventilation weaning of intolerance of SBT
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of respiratory system compliance (Crs)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Capacity of total respiratory system to gain volume for a given pressure
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of lungs compliance (CL)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Capacity of lungs to gain volume for a given pressure
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of chest wall compliance (Ccw)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Capacity of lungs to gain volume for a given pressure
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of transpulmonary pressure (Ptranspulm)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Alveolar pressure minus pleural pressure
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of ratio of total dead space volume over tidal volume
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Calculated by means of expired CO2 and arterial blood gas CO2
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of total dead space volume
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Calculated by means of expired CO2
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of total Positive End-Expiratory Pressure (PEEPtot)
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Airway pressure during end-expiratory ventilator occlusion
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of heart rate
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Standard monitoring
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of blood pressure
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Standard monitoring
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of Plateau pressure (Pplat)
Time Frame: Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Airway pressure during end-inspiratory ventilator occlusion (corresponds to alveolar pressure)
|
Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Evolution of intrinsic Positive End-Expiratory Pressure (PEEPi)
Time Frame: Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
PEEPi minus PEEP set on ventilator
|
Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Pulmonary strain
Time Frame: Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Measured as the ratio of tidal volume over functionnal residual capacity (FRV)
|
Recorded every 5 minutes during each sequence and washout period, 180 minutes
|
Evolution of Diaphragmatic excursion (DE)
Time Frame: Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Ultrasound measurement of diaphragm movement during inspiration
|
Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Evolution of Diaphragmatic thickening fraction (DTF)
Time Frame: Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Ultrasound measurement of diaphragm thickening during inspiration
|
Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Evolution of hematocrits
Time Frame: Recorded at minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Mesured by arterial blood
|
Recorded at minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Evolution of Richmond Agitation/Sedation scale (RASS) score
Time Frame: Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Used in ICU to monitor neurologic changes in patients.
Scale from -5 (unarousable) to +4 (combative).
0 is a calm and responsive patient.
|
Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Evolution of Borg dyspnea scale score
Time Frame: Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Numeric scale to quantify dyspnea from 0 to 10. 0 mean patient does not feel that breathing is difficult and 10 is a maximal dyspnea. Measured twice during each Spontaneous Breathing Trial |
Recorded at minute 1 and minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Evolution of Multidimensionnal dyspnea scale (MDP) score
Time Frame: Recorded at minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Score to quantify comfort, dyspnea and assess respiratory effort as perceived by patient. This scale contains multiple items, divided in two dimensions : sensory and affective. Sensory dimension contains : intensity on a scale of 0 to 10 of five sensory qualities (physical breathing effort, air hunger, tightness, mental breathing effort, hyperpnoea) Affective dimension contains : a breathing discomfort scale (scale of 0 to 10) Measured once during each Spontaneous Breathing Trial |
Recorded at minute 30 of each three spontaneous Breathing Trial, 90 minutes
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Lise Piquilloud Imboden, MER&PD, University of Lausanne Hospitals
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- TWEEP
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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